# A012017 (b-file synthesized from sequence entry)
0 1
1 1
2 9
3 153
4 2993
5 -72111
6 -33331719
7 -7328604631
8 -1581635839519
9 -356792088521439
10 -81022312424248727
11 -15576441107086727111
12 22243831754082386577
13 3229505766853670411015281